nginx反向代理配置

   location /api/ {proxy_set_header Host $http_host;proxy_set_header X-Real-IP $remote_addr;proxy_set_header REMOTE-HOST $remote_addr;proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;proxy_pass http://localhost:8083/;}# 刷新页面404
location / { try_files $uri $uri/ /index.html; 
} 

遇到的问题：
我的https协议的网站，为什么能转到http://localhost:8083/不报错